The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Bosses (14 members)
- Campaigns (0 members)
- Candidates for deletion (1 member)
- Candidates for speedy deletion (0 members)
- Citation needed (0 members)
- Cleanup (0 members)
- Community (4 members)
- Copyright templates (12 members)
- DUSK (48 members)
- DUSK Characters (1 member)
- Development (1 member)
- Disambiguations (1 member)
- Documentation templates (3 members)
- Dusk (9 members)
- Dusk Wiki (8 members)
- Enemies (23 members)
- Enemy images (16 members)
- Episodes (6 members)
- Features (3 members)
- Formatting templates (19 members)
- Frog (1 member)
- Front page sections (3 members)
- Hidden categories (10 members)
- Images (4 members)
- Images needing improvement (0 members)
- Infobox templates (0 members)
- Legal notices (3 members)
- Levels (6 members)
- Locations (1 member)
- Media (2 members)
- Monsters (0 members)
- Navigation templates (3 members)
- Notice templates (16 members)
- Pages to be merged (0 members)
- Pages to be moved (0 members)
- Pages with broken file links (0 members)
- Pages with ignored display titles (1 member)
- Powerups (5 members)
- Prop (1 member)
- Real-World Articles (1 member)
- Screenshots (57 members)
- Secret Levels (1 member)
- Stubs (11 members)
- Template documentation (46 members)
- Templates (15 members)
- Templates with bad documentation (0 members)
- Templates with no documentation (0 members)
- The Facilities (13 members)
- The Foothills (13 members)
- The Nameless City (9 members)